#include<iostream> #include<cstdio> using namespace std; int main() { int n; cin >> n; for(int i=1;i<=n;i++){ for(int j=1;j<=i-1;j++){ cout<<" "; } for(int k=1;k<=2*n-(2*i-1);k++){ cout<<"*"; } cout << endl; } for(int i=2;i<=n;i++){ for(int j=1;j<=n-i;j++){ cout<<" "; } for(int k=1;k<=i*2-1;k++){ cout<<"*"; } cout << endl; } return 0; }